Apparatus for the remote unscrewing and extraction of an assembly screw
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Dec 3, 1991
Grant Date -
N/A
app pub date -
Nov 15, 1989
filing date -
Nov 16, 1988
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
The apparatus comprises a pole (32), a C-shaped frame (34) fastened to one end of the pole (32) and having two branches (35, 36) substantially parallel to one another and an adjoining part (37) between the two branches, an extraction screw (40) engaged in an internally threaded hole passing through one branch (35) of the frame (34) and having one end forming a punch (50) directed towards lthe inside of the frame (34), and a means (43) for the remote actuation of the extraction screw (40) by screwing or unscrewing. The apparatus also possesses a centring ring (47) arranged round a smooth part of the extraction screw located between its threaded part and its end (50) forming the punch. Unscrewing is carried out by exerting a torque about the axis of the screw (16a) to be extracted, by means of the pole (32) and the frame (34), after the extraction screw has been tightened. The apparatus can be used particularly for carrying out the unscrewing and extraction of screws for the fastening of springs (27) of the fuel assembly of a nuclear reactor.
First Claim
Family
International Classification(s)
Cited Art Landscape
Patent Citation Ranking
Advertisement
Advertisement
Advertisement
Recipient Email Address
Recipient Email Address
Comment
Recipient Email Address
Add to Portfolio(s)
To add this patent to one, or more, of your portfolios, simply click the add button.
This Patent is in these Portfolios:
Add to additional portfolios:
Last Refreshed On:
Changes done successfully